{"refrec":{"BRefID":20315,"RR":"<b>Mermillod-Blondin, F.; Gérino, M.; Degrange, V.; Lensi, R.; Chassé, J.-L.; Rard, M.; Creuzé, M.; Creuzé des Châtelliers, M.</b> (2001). Testing the functional redundancy of <i>Limnodrilus</i> and <i>Tubifex</i> (Oligochaeta, Tubificidae) in hyporheic sediments: an experimental study in microcosms. <i>Can. J. Fish. Aquat. Sci. 58(9)</i>: 1747-1759. <a href=\"https://dx.doi.org/10.1139/cjfas-58-9-1747\" target=\"_blank\">https://dx.doi.org/10.1139/cjfas-58-9-1747</a>","BEntID":20315,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Can. J. Fish. Aquat. Sci. 58(9)</i>: 1747-1759. <a href=\"https://dx.doi.org/10.1139/cjfas-58-9-1747\" target=\"_blank\">https://dx.doi.org/10.1139/cjfas-58-9-1747</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":1,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Mermillod-Blondin, F.; Gérino, M.; Degrange, V.; Lensi, R.; Chassé, J.-L.; Rard, M.; Creuzé, M.; Creuzé des Châtelliers, M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Mermillod-Blondin, F. <i>et al.</i>","Englishabstract":"Most tubificid worms are classified in the same functional group by their similar bioturbation and feeding activities in fine sediments of lakes. The objective of this study was to test the functional redundancy of two genera of tubificids (<i>Limnodrilus</i> and <i>Tubifex</i>) at two densities in coarse sediments using slow filtration columns. We measured the effects of the worms on particle redistribution, organic matter processing, nutrient fluxes, and microbial characteristics. The results showed that <i>Limnodrilus</i> and <i>Tubifex</i> created the same stimulation of aerobic and anaerobic microbial activities in the sediment. However, 50 <i>Tubifex</i> had a greater effect than 50 <i>Limnodrilus</i> on microbial processes. Furthermore, at a density of 100 oligochaetes per column, only <i>Tubifex</i> significantly increased particle redistribution and oxygen consumption in the first centimetre of the sediment. In contrast, <i>Limnodrilus</i> more often modified microbial activity in the deeper layers of the columns. The functional redundancy of the two genera of tubificid worms was validated by most measured processes. 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